<template>
  <div style="position: relative;">
    <div v-if="type === '2'" class="verify-img-out"
         :style="{height: (parseInt(setSize.imgHeight) + vSpace) + 'px'}"
    >
      <div class="verify-img-panel" :style="{width: setSize.imgWidth,
                                                   height: setSize.imgHeight,}">
        <img :src="'data:image/png;base64,'+backImgBase" alt="" style="width:100%;height:100%;display:block">
        <div class="verify-refresh" @click="refresh" v-show="showRefresh"><i class="iconfont icon-refresh"></i>
        </div>
        <transition name="tips">
          <span class="verify-tips" v-if="tipWords" :class="passFlag ?'suc-bg':'err-bg'">{{ tipWords }}</span>
        </transition>
      </div>
    </div>
    <!-- 公共部分 -->
    <div class="verify-bar-area" :style="{width: setSize.imgWidth,
                                              height: barSize.height,
                                              'line-height':barSize.height}">
      <span class="verify-msg" v-text="text"></span>
      <div class="verify-left-bar"
           :style="{width: (leftBarWidth!==undefined)?leftBarWidth: barSize.height, height: barSize.height, 'border-color': leftBarBorderColor, transaction: transitionWidth}">
        <span class="verify-msg" v-text="finishText"></span>
        <div class="verify-move-block"
             @touchstart="start"
             @mousedown="start"
             :style="{width: barSize.height, height: barSize.height, 'background-color': moveBlockBackgroundColor, left: moveBlockLeft, transition: transitionLeft}">
          <i :class="['verify-icon iconfont', iconClass]"
             :style="{color: iconColor}"></i>
          <div v-if="type === '2'" class="verify-sub-block"
               :style="{'width':Math.floor(parseInt(setSize.imgWidth)*47/310)+ 'px',
                                  'height': setSize.imgHeight,
                                  'top':'-' + (parseInt(setSize.imgHeight) + vSpace) + 'px',
                                  'background-size': setSize.imgWidth + ' ' + setSize.imgHeight,
                                  }">
            <img :src="'data:image/png;base64,'+blockBackImgBase" alt=""
                 style="width:100%;height:100%;display:block;-webkit-user-drag:none;">
          </div>
        </div>
      </div>
    </div>
  </div>
</template>
<script type="text/babel">
/**
 * VerifySlide
 * @description 滑块
 * */
import {aesEncrypt} from "./../utils/ase"
import {resetSize} from './../utils/util'
import {reqGet, reqCheck} from "./../api/index"
import {computed, onMounted, reactive, ref, watch, nextTick, toRefs, watchEffect, getCurrentInstance} from 'vue';
import {ElMessage} from "element-plus";
import $bus from '../../../utils/bus.js'
//  "captchaType":"blockPuzzle",
export default {
  name: 'VerifySlide',
  props: {
    captchaType: {
      type: String,
    },
    type: {
      type: String,
      default: '1'
    },
    //弹出式pop，固定fixed
    mode: {
      type: String,
      default: 'fixed'
    },
    vSpace: {
      type: Number,
      default: 5
    },
    explain: {
      type: String,
      default: '向右滑动完成验证'
    },
    imgSize: {
      type: Object,
      default() {
        return {
          width: '310px',
          height: '155px'
        }
      }
    },
    blockSize: {
      type: Object,
      default() {
        return {
          width: '50px',
          height: '50px'
        }
      }
    },
    barSize: {
      type: Object,
      default() {
        return {
          width: '310px',
          height: '40px'
        }
      }
    }
  },
  setup(props, context) {
    const {mode, captchaType, vSpace, imgSize, barSize, type, blockSize, explain} = toRefs(props)
    const {proxy} = getCurrentInstance();
    let secretKey = ref(''),           //后端返回的ase加密秘钥
        passFlag = ref(''),         //是否通过的标识
        backImgBase = ref(''),      //验证码背景图片
        blockBackImgBase = ref(''), //验证滑块的背景图片
        backToken = ref(''),        //后端返回的唯一token值
        startMoveTime = ref(''),    //移动开始的时间
        endMovetime = ref(''),      //移动结束的时间
        tipsBackColor = ref(''),    //提示词的背景颜色
        tipWords = ref(''),
        text = ref(''),
        finishText = ref(''),
        setSize = reactive({
          imgHeight: 0,
          imgWidth: 0,
          barHeight: 0,
          barWidth: 0
        }),
        top = ref(0),
        left = ref(0),
        moveBlockLeft = ref(undefined),
        leftBarWidth = ref(undefined),
        // 移动中样式
        moveBlockBackgroundColor = ref(undefined),
        leftBarBorderColor = ref('#ddd'),
        iconColor = ref(undefined),
        iconClass = ref('icon-right'),
        status = ref(false),	    //鼠标状态
        isEnd = ref(false),		//是够验证完成
        showRefresh = ref(true),
        transitionLeft = ref(''),
        transitionWidth = ref(''),
        startLeft = ref(0)

    const barArea = computed(() => {
      return proxy.$el.querySelector('.verify-bar-area')
    })

    function init() {
      text.value = explain.value
      getPictrue();
      nextTick(() => {
        let {imgHeight, imgWidth, barHeight, barWidth} = resetSize(proxy)
        setSize.imgHeight = imgHeight
        setSize.imgWidth = imgWidth
        setSize.barHeight = barHeight
        setSize.barWidth = barWidth
        proxy.$parent.$emit('ready', proxy)
      })

      window.removeEventListener("touchmove", function (e) {
        move(e);
      });
      window.removeEventListener("mousemove", function (e) {
        move(e);
      });

      //鼠标松开
      window.removeEventListener("touchend", function () {
        end();
      });
      window.removeEventListener("mouseup", function () {
        end();
      });

      window.addEventListener("touchmove", function (e) {
        move(e);
      });
      window.addEventListener("mousemove", function (e) {
        move(e);
      });

      //鼠标松开
      window.addEventListener("touchend", function () {
        end();
      });
      window.addEventListener("mouseup", function () {
        end();
      });
    }

    watch(type, () => {
      init()
    })
    onMounted(() => {
      // 禁止拖拽
      init()
      proxy.$el.onselectstart = function () {
        return false
      }
    })

    //鼠标按下
    function start(e) {
      e = e || window.event
      if (!e.touches) {  //兼容PC端
        var x = e.clientX;
      } else {           //兼容移动端
        var x = e.touches[0].pageX;
      }
      console.log(barArea);
      startLeft.value = Math.floor(x - barArea.value.getBoundingClientRect().left);
      startMoveTime.value = +new Date();    //开始滑动的时间
      if (isEnd.value == false) {
        text.value = ''
        moveBlockBackgroundColor.value = '#337ab7'
        leftBarBorderColor.value = '#337AB7'
        iconColor.value = '#fff'
        e.stopPropagation();
        status.value = true;
      }
    }

    //鼠标移动
    function move(e) {
      e = e || window.event
      if (status.value && isEnd.value == false) {
        if (!e.touches) {  //兼容PC端
          var x = e.clientX;
        } else {           //兼容移动端
          var x = e.touches[0].pageX;
        }
        var bar_area_left = barArea.value.getBoundingClientRect().left;
        var move_block_left = x - bar_area_left //小方块相对于父元素的left值
        if (move_block_left >= barArea.value.offsetWidth - parseInt(parseInt(blockSize.value.width) / 2) - 2) {
          move_block_left = barArea.value.offsetWidth - parseInt(parseInt(blockSize.value.width) / 2) - 2;
        }
        if (move_block_left <= 0) {
          move_block_left = parseInt(parseInt(blockSize.value.width) / 2);
        }
        //拖动后小方块的left值
        moveBlockLeft.value = (move_block_left - startLeft.value) + "px"
        leftBarWidth.value = (move_block_left - startLeft.value) + "px"
      }
    }

    //鼠标松开
    function end() {
      endMovetime.value = +new Date();
      //判断是否重合
      if (status.value && isEnd.value == false) {
        var moveLeftDistance = parseInt((moveBlockLeft.value || '').replace('px', ''));
        moveLeftDistance = moveLeftDistance * 310 / parseInt(setSize.imgWidth)
        let data = {
          captchaType: captchaType.value,
          "pointJson": secretKey.value ? aesEncrypt(JSON.stringify({
            x: moveLeftDistance,
            y: 5.0
          }), secretKey.value) : JSON.stringify({x: moveLeftDistance, y: 5.0}),
          "token": backToken.value
        }
        //验证
        reqCheck(data).then(res => {
          if (res.repCode == "0000") {
            $bus.emit('res',res)
            moveBlockBackgroundColor.value = '#5cb85c'
            leftBarBorderColor.value = '#5cb85c'
            iconColor.value = '#fff'
            iconClass.value = 'icon-check'
            showRefresh.value = false
            isEnd.value = true;
            if (mode.value == 'pop') {
              setTimeout(() => {
                proxy.$parent.clickShow = false;
                refresh();
              }, 1500)
            }
            passFlag.value = true
            tipWords.value = `${((endMovetime.value - startMoveTime.value) / 1000).toFixed(2)}s验证成功`
            var captchaVerification = secretKey.value ? aesEncrypt(backToken.value + '---' + JSON.stringify({
              x: moveLeftDistance,
              y: 5.0
            }), secretKey.value) : backToken.value + '---' + JSON.stringify({x: moveLeftDistance, y: 5.0})


            setTimeout(() => {
              tipWords.value = ""
              proxy.$parent.closeBox();
              proxy.$parent.$emit('success', {captchaVerification})
            }, 1000)

          } else {
            moveBlockBackgroundColor.value = '#d9534f'
            leftBarBorderColor.value = '#d9534f'
            iconColor.value = '#fff'
            iconClass.value = 'icon-close'
            passFlag.value = false
            setTimeout(function () {
              refresh();
            }, 1000);
            proxy.$parent.$emit('error', proxy)
            tipWords.value = "验证失败"
            setTimeout(() => {
              tipWords.value = ""
            }, 1000)
          }
        })
        status.value = false;
      }
    }

    const refresh = () => {
      showRefresh.value = true
      finishText.value = ''

      transitionLeft.value = 'left .3s'
      moveBlockLeft.value = 0

      leftBarWidth.value = undefined
      transitionWidth.value = 'width .3s'

      leftBarBorderColor.value = '#ddd'
      moveBlockBackgroundColor.value = '#fff'
      iconColor.value = '#000'
      iconClass.value = 'icon-right'
      isEnd.value = false

      getPictrue()
      setTimeout(() => {
        transitionWidth.value = ''
        transitionLeft.value = ''
        text.value = explain.value
      }, 300)
    }
    // 请求背景图片和验证图片
    function getPictrue() {
      let data = {
        captchaType: captchaType.value
      }
      reqGet(data).then(res => {

        if (res.repCode == "0000") {
          $bus.emit('getKeyValue',res)
          backImgBase.value = res.repData.originalImageBase64
          blockBackImgBase.value = res.repData.jigsawImageBase64
          backToken.value = res.repData.token
          secretKey.value = res.repData.secretKey
        } else {
          tipWords.value = res.repMsg;
        }
      })
    }

    return {
      secretKey,           //后端返回的ase加密秘钥
      passFlag,         //是否通过的标识
      backImgBase,      //验证码背景图片
      blockBackImgBase, //验证滑块的背景图片
      backToken,        //后端返回的唯一token值
      startMoveTime,    //移动开始的时间
      endMovetime,      //移动结束的时间
      tipsBackColor,    //提示词的背景颜色
      tipWords,
      text,
      finishText,
      setSize,
      top,
      left,
      moveBlockLeft,
      leftBarWidth,
      // 移动中样式
      moveBlockBackgroundColor,
      leftBarBorderColor,
      iconColor,
      iconClass,
      status,	    //鼠标状态
      isEnd,		//是够验证完成
      showRefresh,
      transitionLeft,
      transitionWidth,
      barArea,
      refresh,
      start
    }
  },
}
</script>

